Jonas Jensen f8318ef96f C++: Move TIRVariable to its own file ...

The `SSAConstruction.getNewIRVariable` was very slow on Wireshark. This
was probably because it couldn't join on multiple columns
simultaneously. Instead of improving the join, I observed that the
`TIRVariable` type was the same between all three IR stages except for a
few occurrences of `FunctionIR` that could easily be changed to
`Function`. By sharing `TIRVariable` between all the stages, we avoid
recomputing it and translating it between every stage, turning the slow
`getNewIRVariable` predicate into a no-op.

This change means that later stages of the IR can't introduce new
variables, but that was already the case because
`config/identical-files.json` forced all three `IRVariable.qll` files to
be identical.

2019-02-03 13:36:30 +01:00

..

src

C++: Move TIRVariable to its own file

2019-02-03 13:36:30 +01:00

test

Merge pull request #812 from jbj/ir-backedge

2019-01-31 11:28:21 -08:00